qapnav.dll was created for myEXTRA! Enterprise from Attachmate Corporation, but that doesn’t really explain why these and other orphaned DLL files compete with our machine abilities until executing the simplest task takes hours.
The worst is when these files pop up when you are in the middle of a complicated document in excel for example. Even if you save after every action, those DLL files will manage to pop up right before you have saved your last action completely wasting your time and effort.
The solution is ZookaWare PC Cleaner hands down. They offer the best registry-scanning package out there. Visit their website today, and you can see for yourself.